The purpose of this three-year study is to determine the prevalence and incidence of the different types of cardiac disease and ECG abnormalities in SCI patients. Study goals are: (i) delineation of the specific types of heart disease that occur in the SCI population as manifested both pre-clinically and clinically and (ii) demonstration of their association with ECG findings. This will enable validation of scores and algorithms using the inexpensive and widely available ECG for the prevention of heart disease as well as it's early treatment and rehabilitation in SCI patients.